Obviously, when you have a tricky technical problem to solve, the first thing you do is type a few key search words and hope you'll find someone else's solution to the issue. If all you get in return is irrelevant or outdated links, Curah might be useful.
The Microsoft-backed site allows users to collate content and links useful for solving a specific problem, with an emphasis on technical information. As you'd expect, most of the featured content now focuses on Microsoft products, ranging from Windows Server 2012 to Windows Phone app development.
Anyone can browse the content; to contribute, you need to sign in with a Microsoft account. Whether this will sustain itself in the long term or turn into a tech-specific version of Google's failed Knol project is anyone's guess, but it's an interesting idea.